Nut



Sept 30, 1941- c. l.. BRADFORD 2,257,327

NUT

Filed April 23, 1941 l W f f n 'n' llllllllllllll! lm 'All ENToR. Ca r!Bradford.

A 7' TOR/VE YS.

Patented` Sept. 30, 1941 .OFFICE NUT Carlos L. Bradford, Coshocton, OhioApplication April z3, 1941, serial ivo. 389,881

(el. ss-sz) l 4 claims.

My invention relates to a nut. It has to do, more particularly, with anovel type ot nut which is adapted to be applied to an ordinary threadedbolt. Y

At the present time, with the ordinary nut commonly in use, it isnecessary to thread it on the end of the bolt and rotate it until itmoves inwardly along the bolt to its final position. In removing thenut, it is necessary to use a proper wrench and rotate it a sufiicientnumber of times to thread it outwardly along the bolt until it iscompletely removedtherefrom. Thus, as is `well known, considerable timeand effort is required for applying the ordinary nut to a bolt orremoving it therefrom. Furthermore, it often happens that the nut isfrozen on the bolt and is very dii'ilcult to remove.

One of the objects of my inventionis to pro-` vide a nut, adapted to beapplied to an ordinary bolt, which can be quickly and easily removedunder practically any conditions.

Another object of my invention is to provide a nut of the type indicatedwhich also can be quickly and easily applied to the bolt.

Another object of my invention is to provide a nut which is of such astructure that it not only may be easily and quickly applied to orremoved from the bolt but is of such a nature that` when it is onceapplied to the bolt, it will not become accidentally displacedtherefrom.

-Another object of myinvention is to` provide a nut which is of a sturdystructure so that it can adequately withstand the torsional andcompressive forces to which it will be subjected.

Another object of my invention is to provide a nut/ of the typeindicated which is of a simple structure and will not be costly.

The preferred embodiment of my invention is illustrated in theaccompanying drawing wherein similar characters of reference designatecorresponding parts and wherein:

Figure 1 is a side elevational view of a nut made according to myVinvention showing it applied to a bolt.

Figure 2 is a similar view with parts broken away for illustrativepurposes and showing the nut before it has been tightened on the bolt.

Figure 3 is a similar view showing the nut after it has been tightenedon the bolt.

Figure 4 is a perspective view showing the nut before it is applied tothe bolt.

Figure 5 is a perspective View of the two main sections of the nut whichhave been disassembled.

Figure 'I is a perspective view showing how the nut may be locked inposition by the use of a washer.

With reference to the drawing, I have illustrated my nut as comprisingrocker members I and 2. Members I and 2 may be formed of a suitablemetal. Each of the members I and 2 has an angular exterior surface l anda sub- Figure 6 is a perspective view showing how 55 the nut may beapplied to a bolt.

stantially semi-circular inner surface I. However, the upper portion of`the inner surface 4 tapers outwardly towards its upper end. The lowerlend surface 4 is threaded, as indicated at 5. The member I is providedwith a pair of integral ears 6 and the member 2 is provided with a pairof similar integral ears 1. Furthermore, member I is provided with apair of substantially semi-circular sockets` 8 disposed outside the ears6 while member 2 is provided with a pair of similar sockets 9 within theears 'I.

The membersi and 2 are adapted to be disposed wlth their inner surfaces4 facing each otherand with the ears 6 disposed within ears 'I andfitting into the sockets 8, the ears 'I ti ting into sockets `8. Theears i and 1 are provided with aligning openings III adapted to receivehinge pins II which may be `he1d in position in any suitable manner.Thus, the rocker members I and 2 are hingedly connected togetherand areprovided with inner fitting portions at the hinge points. When themembers I and 2 are assembled, they form a complete nut which has anangular outer surface and a circular inner surface.

The threaded portion 5 of members I and 2 is disposed below the hingepoint of the nut. The meeting faces I2 of members I and 2 below thehinge points are substantially vertically disposed. However, thecorresponding faces I3 above the hinge points are angularly disposed anddiverge towards their upper ends. It will be apparent that this angularrelationship of the surfaces I3 will permit swinging of the uppersections of members I and 2 towards each other and simultaneouslyspreading of the portions of members I and 2 below the hinge pins.

In order to lock the lower` ends of the rocker members I and 2 together,I provide a tapered pin I4. This tapered pin is adapted to be forcedinto aligning, correspondingly tapered openings `I5 formed in the lowerportions of members I and 2 below thehinge points` and extendingtransversely thereof. When the pin Il is inserted in the openings I5 andis pushed into its final position, it will securely lock the members Iand 2 together and will prevent relative rotation thereof.

membersl andanespreada circuiarprojeetionorshoulderilonitslower surface.Atthefaces llwheretheshoulderilterminatestheshouiderisbevelemasindicatedat l1. Thenutdredgesllofieitcarriedbytheiandlaresoformed that they cooperatetoproducea completeeircle. Whenthepin IlismitsfinalpositiomasshowninFigurezthefacesiZwiilbeincontactwitheachtherattheirlowerendsandthe loweratsurfaces Iwillbeataslightangle'thememberslandlwillnotbetransmittedto the hinsepin Il.

InusingthisnutLasindicatedinFigureG, the pin Il isremoved and lower endsof Eis thenbeslippei over pin ilmaybeinsertedandpushedo'rtapped inplace.totighten the nut on thebolt. However, the main ad-Yvantageliesinthoeasewithwhichthernitmay beremovedfromthebolt.rItismerely topushthepinlloutandswingtheupper4sectionotmexnbersiand2towmrdseachother which is permittai because oftherela- 2 4 l amaai-""1 l Eachofthemembersfandhasasemi-'l -a unit 'andrbleit'and where power operating wrenchessre. not available.

f For example, this nut wouldbe particularly .useful on airplane engineswhich must beldisas- 5 semhled and reassembled at frequent intervals 1oHaving thus described my invention, what I claim is: h

I. A nut comprising'a pair of rocker members having interiittingportionsP intermediate their "upper and lower ends which arepivotaliyconnected together. each of said 'rocker members being of substantiallywsemi-circular form in cross-section so that they will surround a bolt,the lower portions of said rocker members below the pivot point beingprovided with threads on The nut may zo the interior thereof, each ofsaid rocker members bolt, and the having a lower surface disposed at anangle relative to the horizontal, and a tapered pin tting intocorrespondingly tapered transverse openings formed in said rockermembers to lock said memr bers in position.

said intertting `portions together, said pivot pin tODShip 0f theSurfaces and th outwardly 30 being disposed substantially at rightangles to taperedvupper portions of the surfaces l. It the nut is rozenonnthe bolt, it is merely necessary totaptheupperendsofm i and 2 with ahammer to force them inwardly. The lower ends of members i and 2 will.spread, peimitting removal of the nut without the use of a wrench andwithout threading it along the bolt.

InFigureZthenutisshownbeforeitis tightened on the bolt. As previouslystated, the surfaces lwillbeataslightanglerelativeto the horizontal.However, when the mit is tightened into its final position the surfacesi6 will be horizontally disposed. In tightening the nut on the boit, thelower ends of members i and 2 tend tospread slightly because of theinclination of surfaces i9 and, consequently, when the mrt is in itsfinal tight position and. the surfaces i9arehorizontai,ssin Figure3,there willbesetupabindingactiononthepin Mas indicated by the arrows2G. This binding action will serve to hold the pin. id in position andprevent accidental displacement thereof by vibration. However. the pincan be readily forced from the openings i5 hy tapping it with a ham- 55bers apart.

It will be apparent from the above description that I have provided snur havmg a amber er advantages. The nui: is particularly advantageousfor me where it is desired to quickly disthe vertical axis of the nut,each of said rocker members being of substantially semi-circular form incross-section so that they will surround the'bolt, the lower portions ofsaid rocker members below the pivot pin being provided lwith threads onthe interior thereof, said intertting portions of the rocker memberscontacting with each other at their upper edges torelieve strain fromsaid pivot pins.

40 3. A nut of the type described comprising a members being of such a.form that they will surround a. bolt, the lower ends of said rockermembers being provided with threads on the interior thereof, and atransversely extending pin tting into transverse aligning openingsformed in said rocker members below the pivot point.

d. A nut comprising a pair of rocker members having interiittingportions intermediate their upper and lower ends which are pivotallyconnected together, each of said rocker members being of substantiallysemcircular form in crosssection so that they will surround the bolt,the lower portions of said rocker members below the pivot point beingprovided with threads on the m interior thereof, each of said rockermembers having a substantially semicircular projection formed thereon,and a. washer surrounding both of the semicircular projections to lockthe rocker members in position, the lower surfaces of said projectionsbeing disposed at a slight angle relative to the horizontal.

CARLOS L. BRADFORD.

